參數(shù)資料
型號： GP520A
廠商： Electronic Theatre Controls, Inc.
英文描述： Programmable Analog Signal Processor
中文描述： 可編程模擬信號處理器
文件頁數(shù)： 6/10頁
文件大?。?/td> 146K
代理商： GP520A
6
510 - 78 - 06
1.3 V
V
CC
2k2
3μ3
FULL WAVE
RECTIFIER
THRESHOLD
RF
LIN/LOG
CONVERTER
VOLTAGE
REGULATOR
R
R
14
13
9
22
24
26
27
1
3
5
7
11
23
2
25
I
REL
6
GND
I
THRESH
I
GAIN
D
OUT
IN
DELTA
OUT
C
AGC
RECT.
IN
BUOUT
BUFFER
IN
+
LP
FILTER
LPFB
A
IN
P GND
12
S1
10μ
68n
V
IN
R1=1M
V
REG
AVERAGING
CIRCUIT
V
REG
- 0.6 V
I
REL
I
THRESH
I
GAIN
10k
B
OUT
B
0.1
V
O
+12V
LT001
+
-
2
3
7
6
4
-12V
68n
10n
31
30
AGC
10n
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Quiescent Voltage on Pad 2
V
Q2
I
THRESH
=
I
R
-
400
-
mV
Quiescent Voltage on Pad 3
V
Q3
I
GAIN
=
I
R
x 1.875
-
700
-
mV
Quiescent Voltage on Pad 23
V
Q23
-
500
-
mV
Quiescent Voltage on Pad 25
V
Q25
-
500
-
mV
Quiescent Voltage on Pad 27
V
Q27
-
600
-
mV
Release Current Max (Pad 1)
I
REL MAX
I
REL
= 0 (S1 closed)
-
300
-
nA
Release Current Min (Pad 1)
I
REL MIN
I
REL
= 1.875 x
I
R
(S1 closed)
-
30
-
nA
Input Resistance (Pad 25)
R
IN25
I
REL
=
I
R
-
17
-
k
Input Resistance (Pad 27)
R
IN27
I
27
=
±
I
R
-
4
-
k
Max Transconductance
(Pad 26 to V
O
)
G
MAX
I
GAIN
=
I
x
2
x
1.875 V
=30 mV
pp
I
THRESH
=1.875 x
I
R
(Note 1)
-
160
-
μ
A/V
Gain Range (Pad 26 to V
o
)
GAIN
RANGE
I
THRESH
=1.875 x
I
R
(Note 2)
V
26
= 25 mV
pp
I
THRESH
=
I
R,
I
GAIN
= 2 x 1.875 x
I
R
V
26
= 100 mV
pp
(Note 3)
I
GAIN
=
I
x
2
x
1.875 (Note 4)
V
26
= 100 mV
pp
-
33
-
dB
Output Limiting Level (Pad 3)
OUT
LIM
-
0.7
-
μ
A
RMS
Limiting Level Range
LIM
RANGE
-
13
-
dB
AGC Compression Ratio
CMP
RAT
I
THRESH
=
I
R
I
GAIN
I
R
(Note 5)
-
5
-
NOTES:
1.
G
MAX
= V
o
/ (V
26
x 1M)
2.
GAIN
RANGE
= 20 LOG (
V
o
[
I
GAIN
= 2 x1.875 x
I
R
]/
V
o
[
I
GAIN
= 0])
3.
OUT
LIM
= V
o
/ 1M
10
20 LOG (V
o
[
V
26
=5.62mV
RMS
]/
V
[V
=17
.
8m
V
RMS
])
-45dBV -35dBV
AGC CONTROL STAGE
Unless otherwise stated in CONDITIONS column all switches remain OPEN, all current sources are 0
μ
A
4.
LIM
RANGE
=20 LOG (V
o
[I
THRESH
=1.875 x
I
R
]
/V
o
[I
THRESH
=0]
)
5.
CMP
RAT
=
Fig. 7 AGC Control Stage Test Circuit
All resistors in ohms, all capacitors in
farads unless otherwise stated.
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